Pneumatic carpet-sweeper.



pififeaves.

VXFRANK .1.y aUIsT, on WORCESTER, MASSACHUSETTS.

. rnEUMA'rjIc CARPET-'SWEEPERL f To @Hicham t may concern; d

Be it known that I, FRANK J. QUIST, a

v"citizen of the United States,'residing at Worcester, inthe county of- Worcester and q State of Massachusetts, .have invented a new and useful Pneumatic Carpet-Sweeper, of

`which the following is a specification.

The principal objects of this invention are .to provide an elficient combination between a pneumatic carpet sweeper ofy the well-known type in which the device is operated by rolling it along the floor,'and a. rotary brusln and particularly to provide combination for this purpose in which the nozzle for receiving the air and directing itV to the pneumatic suction device can be removed from the casing in a simple and eX- peditious manner without interfering with thel connections by which the brush yis driven except to temporarily disconnect.

them from the brush and to cause this ternporary4 disconnection `to be accomplished simply by the' removal of the nozzle andthe operative engagement to be restored bythe mere replacement of 'the ynozzle in operative position on the casing.,Y

yThe invention involvesy an improved driving device for the brush; improved means for supporting the same; an improved nozzle in which the brush is located; an limproved i nozzle plate for contacting with the surface to be cleaned having means wherebyA the cleaning yaction. -ca'n be applied to surfaces.

beyond the exterior outlines of .the casing and close-to the `.walls of the room; rand 1mprovements 1n the arrangement 0f the rotary brush itself relatively to the rest of the device.

Further objects and advantages of the invention will appear hereinafter.

Reference is to be had to the accompanying drawings in which- Figure l is a side elevation of a pneumatic carpet sweeper constructed in= accordance with this invention. Fig. 2 is a longitudinal central sectional view of a portion thereof in a plane parallel with the planeof Fig. l'.

Fig. 3 is abottom plan view of a portion .of

the device. Fig. l isa vertical sectional view taken through the center of the brush showing one end of the nozzle.

'llie invention is shown comprised ina form in vwhich a casing 10 isemployed hav.-Y

ing a bottom 11 and a'slanti'ng partition 12y above the bottom. rThe bottom yand this partition, with the sideand 'endewalls fl'lrnish,

Specification of Letters Patent.

Patented .nay i1, 1916.

rApplication"filed. June 26, 1912. ,Seria1No.v7r05,898-.

" A a lreceptacle for receiving the dust separator,

as iswell understood in this art. (At the rear.

Aof this partition is a crank shaft let on which are wheels 15 provided with corrugated rubanyr desired kind can'be employed. They are.'

connected by any suitable ports' and valves y. through the partition 12 with the receptacle underneath which'is designed as usual for the reception of the dust collector shown in this instance inthe form of a bag 20. This bag is connected at its open front end with a vframe 21 provided with leather Aor other packing on both* sides thereof and justcovering the opening in the bag receptacle. rlfhe side walls are provided with a pair of fora wardly extending pins 2 2 which arereceived in slots 23 in the endsy of this lframe. YThey y project beyond the frame and into sockets 24C'v in the inner edges of a nozzler25., This vnozzle is provided with a passage in its rear wall communicating with'the open mouth of the dust bag and the nozzle is hollow so as to receivea brush 27 therein. This brush is shown as mounted on a shaft 28 formed of two or more pieces of Wire twisted together and into which the bristles are bound. `At the ends this shaftis pro-Ik vided with Va pair Vof plates 28*L soldered or otherwise secured thereto, being'preferably ofmetal and on these are supported a plu- `rality of thin radial longitudinal vanes V29,.v The bristles obviously extend between these vanes and beyond them.

The shaft 28 is so located that the brushprojects through the lower nozzle plate 30 f' which constitutes the operative face' ofthe nozzle. This nozzle plate is provided with y* a wide opening 231 extending from endto cud ofthe brush and constitutes the opening through Which'the air isk admitted into the interior of thc'device. The nozzle plate is llat ontliebottom so lar as the surfacev is concerned which immediately surrounds this opening but its forward and rear edges are curvedupwardly'. y

In orderthatthe device may be usedto cover an area wider than that of the casing of the room in which it is used, the nozzle l is provided. with a pair of slots 32 at its ends extending outwardly from the open-4 ing nearly to the ends of the plate 3() and the plate is extended beyond the side walls oi the casing as shown in Fig. et. 'lhe slots preferably gradually increase in height :from their outer edges toward the main opening. rl`he nozzle preferably is held in position by means ot' a hook 325 mounted on an eccentric 3i which has a handle 35. The hooltis adapted to come into engagement with a projection 3G secured tothe end of the nozzle. each end.

1n order that the brush may be operated eli'ectively on dill'erent types of carpets and ioors an adjusting device preferably is employed ior this end of the casing. rlhis is shown in the present instance in the form of' a plate 37 set into the bottom of the casing and a plate io pivotally connected thermvith at one end and supporting a` roller 2li), .fin adjusting screw l-l) is cmployed lo vary the distance ot' the roller Al'roln the bottom ot' the casing.

rl`he brush is driven by a .sprocket wheel mounted ou the crank shaft Lt and provided with a flexible driving chain 46. This driving chain passes over an idler 47 on the casing and an end idler 4S locatcdbeyond lthe end ot the casing and beyond the shat't 2S. This idler is mounted on an arm 49 pivb.oted at 5U on the casing and provided with an adjusting device 51 by which it can be sonnig up and down about thepivot. The

brush shaft Q8 is provided with a sprocket wheel on the end adapted to mesh with the chain. it is to be observed that this sprocket wheel is located below the lower strand ,of the chain so that when the nozzle is applied to the casing the sprocket wheel comes up from below and engages the chain. `At the saine time it tightens the chain by moving it upwardly adjacent to the idler 48 so that a increment of the casing over the fioorwill,

cause the rotation of the wheels to be transmitted directly and positively to the brush. Yet when it is desired to remove the nozzle and brush this can be done without disconnecting any of these parts because the nozzle is, simply lowered on the casing to bring the sprocket 52 out of engagement with `the chain. This looscns the chain but does not ali'ect the connections, the arm 49 being provided with a projection 54 to prevent the chain from being dislodged from the idler d8. It will be seen, therefore, that by this connection the positive operating` means for the brush is intact and is not disturbed when the brnsh and nozzle `are removed.

(,)ne of these is employed onV Atltluugh have illustrated and described a preferred embodiment of the invention and shown it as applied to one speclc type that many modifications can be made therein by any person skilled in the art without departing troni the scope of the invention as expressed in the claims. Therefore I do not of cleaning device, 'I am aware of the fact wish to be limited to the details of construe i means when the nozzle is applied tothe casing.

2. ln a pneunnitic` carpet sweeper, the combination with a casing, of a pneumatic suction device carried thereby, wheels for operating the suction device7 a nozzle re movably mounted on the casing and connected with said suction device, a brush carried by said nozzle, a flexible driving member' connected with said wheels and supported by the casing, and means carried ys'aid nozzle for operatively connecting said brush with the driving member when the nozzle is in position on the casing. 1

3. In a pneumatic carpet sweeper, the

combination with a casing, of a pneumatic` suction levicecarried thereby, wheels for supporting the casing and operatively c011- nectcd with said suction device for operating it, a nozzle removably mounted on the casing andv connected with said suctioncle-` vice, a brush carried'by said nozzle, a `chain supported by. the casing for driving thej brush, and a sprocket wheel fixed to the@` brush for connecting the brush with said chain when the nozzle is applied to the cas-- ing.

t. tion with a casing, of supporting wheels carried thereby, an endless chain "supported 'by the casing and connected with th'e wheels, a nozzle rcmovably'mounted oiisthe-casing, a brush carried by said nozzle and having4 a sprocketwheel normally engagngthe outer side ot' the lower strand of said endless chain, whereby when the nozzle is removed from the casing the sprocket wheel `will movcout of engagement with the chain and will move into engagement therewith so as to, be positively operated thereby when the nozzle is replaced on the casing.

5. In a pneumatic carpet sweepthe ln a pneumatic sweeper, the Combinacombination of a casing, supporting Wheels therefor, a sprocket wheel connected with the supporting Wheels, a nozzle removably mounted on the casing, an arm projecting out from the casing over the end of said nozzle and having an idler thereon, an end.

ing, an arm pivoted on the casing and pro-- jecting ont from the casing over the end ot said nozzle and having an idler thereon, a brush carried by tliinozz'l,y a sprocket wheel on the brush, a chain on said: sprocket nheels, and means for adjusting the arm aboutits pivot to control the tension of the chain. y

7; ln a pneumatic carpet sweeper, the combination with a casing, of wheels vtor supporting the casing', a nozzle removably mounted on the casing and provided with a wide opening in the bottom surface thereof, a brush located in said nozzle in position to project through said opening in the nozzle, means supported by the casing for driving the brush from the wheels, and means on the nozzle for connecting the brush with said brush operating means when the nozzle is applied to the easing.

8. In a carpet sweeper, the combination ofy a casing, driving and supporting wheels thereon, an endless chain connected with anddriven by said wheels, a rotary brush on the casing having a sprocket wheel thereon meshing with the lower side of the lower strand of said chain, and bearings for said brush removable from the casing downwardly away from said lower strand.v

9.. A carpet sweeper comprising a nozzle having an opening' in the operative face thereof, a. brush mounted to rotate in said opening and comprising a plurality of longitudinal radial vanos, bristles between said vai-ies projecting through the opening in the nozzle, and means'for drawing the dust away from Said brush,

l0. A carpet sweeper comprising a hollow nozzle having a wide inlet opening extending from end toend, a brush mounted Ato rotate in the nozzle and projecting through said opening, said nozzle vhaving an operative .face extending beyond the ends of said opening` and provided with two opposite alined free Slots at its ends narrower than said. inlet opening and extending outwardly Jfrom the ends ot' the opening and ot' the brush for taking up the dust.

,ln testimony whereof I have hereunto set my hand, in the presence of two subscribing witnesses.

FRANK J. QUIST.

Witnesses:

. C. A. WnNs'rnAN-o,

JOHN Qms'r. 

